This article provides a comprehensive guide on how to use MQTT, Telegraf, and InfluxDB Cloud v3 for IoT data collection. It explains the process of gathering data from an MQTT broker using Telegraf, a plugin-driven agent, and sending it to InfluxDB Cloud v3, a time series database designed for storing and analyzing real-time generator data. The article also covers how to run examples in this repository using Docker or manually installing the Mosquitto MQTT broker and setting up the Python environment. It further delves into the code walkthrough of the emergency_generator example, explaining its key components such as the emergency_generator class, runEmergencyGenerator function, mqtt_publisher class, and Telegraf configuration file. The author also highlights how to leverage Telegraf for handling generator data in JSON format.